{"id":25512,"date":"2025-04-08T11:55:26","date_gmt":"2025-04-08T06:25:26","guid":{"rendered":"https:\/\/conexmetals.com\/product\/stainless-steel-square-head-plugs-stainless-steel-threaded-pipe-plugs\/"},"modified":"2026-06-28T21:50:41","modified_gmt":"2026-06-28T16:20:41","slug":"bouchons-a-tete-carree-en-acier-inoxydable-bouchons-de-tuyauterie-filetes-en-acier-inoxydable","status":"publish","type":"product","link":"https:\/\/conexmetals.com\/fr\/product\/bouchons-a-tete-carree-en-acier-inoxydable-bouchons-de-tuyauterie-filetes-en-acier-inoxydable\/","title":{"rendered":"Bouchons \u00e0 T\u00eate Carr\u00e9e en Acier Inoxydable | Bouchons de Tuyauterie Filet\u00e9s en Acier Inoxydable"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"

\"StainlessHigh Quality Stainless Steel Plugs, NPT Plugs BSP Stainless Steel Plugs 316 Stainless Steel Plugs form India!<\/h2>\n

We are one of the leading manufacturers and exporters of\u00a0Stainless Steel Square Head Plugs and Threaded Pipe Plugs<\/strong>\u00a0from\u00a0India<\/strong>. We have been supplying\u00a0precision threaded pipe closure solutions<\/strong>\u00a0to the world market for many decades. Designed to withstand pressure, temperature, and corrosion challenges in demanding environments, our plugs are available in multiple threading standards and production variants. With a global reputation for quality and consistency, our factory delivers bulk and customized solutions to OEMs, plumbing system integrators, petrochemical companies, and distributors worldwide. Our strength lies in producing high-integrity parts using a combination of investment casting, CNC turning, and hot forging, supported by full in-house testing and export-ready logistics.<\/p>\n

Overview<\/strong><\/p>\n

Our\u00a0Stainless Steel pipe plugs, NPT plugs, BSP plugs, Stainless Steel 316 Plugs, Stainless Steel threaded pipe plugs<\/strong>\u00a0are used to securely seal off the ends of pipe systems or outlets in valves and equipment. The most popular style is the\u00a0square head plug<\/strong>, allowing easy installation or removal using a wrench. These are commonly manufactured via\u00a0investment casting<\/strong>,\u00a0hot stamping<\/strong>, or\u00a0CNC turning from solid bar<\/strong>\u00a0depending on the size, volume, and strength requirements. Threading standards include\u00a0NPT<\/strong>,\u00a0BSP<\/strong>,\u00a0BSPT<\/strong>, and\u00a0NPSM<\/strong>, conforming to major international piping norms.<\/p>\n

Material Grades and Properties<\/strong><\/p>\n

We offer plugs in the following Stainless Steel grades:<\/p>\n\n\n\n\n\n\n\n
Grade<\/th>\nStandard Equivalent<\/th>\nProperties<\/th>\n<\/tr>\n
SS 304<\/td>\nASTM A351 CF8, JIS SUS304<\/td>\nGeneral corrosion resistance, good weldability<\/td>\n<\/tr>\n
SS 316<\/td>\nASTM A351 CF8M, JIS SUS316<\/td>\nSuperior resistance to chlorides and acidic environments<\/td>\n<\/tr>\n
SS 304L<\/td>\nASTM A351 CF3<\/td>\nLow carbon for better corrosion resistance post-welding<\/td>\n<\/tr>\n
SS 316L<\/td>\nASTM A351 CF3M<\/td>\nLow carbon, ideal for food and pharmaceutical applications<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Mechanical Properties of SS 316 (Typical)<\/strong><\/p>\n\n\n\n\n\n\n\n\n
Property<\/td>\nValue<\/td>\n<\/tr>\n
Tensile Strength<\/td>\n515 \u2013 620 MPa<\/td>\n<\/tr>\n
Yield Strength<\/td>\n\u2265 205 MPa<\/td>\n<\/tr>\n
Elongation<\/td>\n\u2265 40%<\/td>\n<\/tr>\n
Hardness (Max)<\/td>\n95 HRB<\/td>\n<\/tr>\n
Operating Temperature<\/td>\nUp to 870\u00b0C<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Manufacturing Processes<\/strong><\/p>\n

Our threaded pipe plugs are produced via:<\/p>\n

    \n
  • Investment Casting (Lost Wax Process)<\/strong>\u00a0for mid-sized and intricate plugs<\/li>\n
  • Hot Stamping<\/strong>\u00a0for high-strength heavy-duty plugs<\/li>\n
  • Turning from Solid Round Bar<\/strong>\u00a0for small batch precision plugs<\/li>\n
  • Post-processing includes\u00a0CNC threading<\/strong>, surface polishing, and pressure testing<\/li>\n<\/ul>\n

    Machinery Used<\/strong><\/p>\n

      \n
    • CNC Lathes and Machining Centers<\/li>\n
    • Vertical Milling Machines for head shaping<\/li>\n
    • Thread Gauging Instruments (NPT, BSP, BSPT standards)<\/li>\n
    • Spectrometers and Surface Roughness Testers<\/li>\n
    • Leak Test Stations and Profile Projectors<\/li>\n<\/ul>\n

      Typical Parts Produced<\/strong><\/p>\n

        \n
      • Square Head Plugs (NPT \/ BSPT \/ BSP \/ NPSM)<\/li>\n
      • Hex Head Plugs<\/li>\n
      • Flush Plugs<\/li>\n
      • Solid Bar Turned Threaded Plugs<\/li>\n<\/ul>\n

        Finish Options<\/strong><\/p>\n

          \n
        • Shot Blasted Natural Finish<\/li>\n
        • Electro-polished for cleanroom or sanitary applications<\/li>\n
        • Machined Finish with protective threading caps<\/li>\n<\/ul>\n

          Industries Served<\/strong><\/p>\n

          Our Stainless Steel pipe plugs are widely used in:<\/p>\n

            \n
          • Petrochemical & Oil Refining Units<\/li>\n
          • Water Treatment Systems<\/li>\n
          • Hydraulic and Pneumatic Circuits<\/li>\n
          • Food & Beverage Processing Equipment<\/li>\n
          • Marine and Offshore Installations<\/li>\n
          • HVAC and Fire Sprinkler Networks<\/li>\n<\/ul>\n

            Dimensional Chart (Standard Sizes)<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n
            Nominal Pipe Size R<\/td>\nA (Thread Length)\u00a0 L<\/td>\nB (Across Flats)<\/td>\nThread Standards<\/td>\n<\/tr>\n
            1\/4″<\/td>\n11 mm<\/td>\n14 mm<\/td>\nNPT, BSP, BSPT, NPSM<\/td>\n<\/tr>\n
            3\/8″<\/td>\n12 mm<\/td>\n17 mm<\/td>\nNPT, BSP, BSPT<\/td>\n<\/tr>\n
            1\/2″<\/td>\n14 mm<\/td>\n22 mm<\/td>\nNPT, BSP, BSPT, NPSM<\/td>\n<\/tr>\n
            3\/4″<\/td>\n16 mm<\/td>\n28 mm<\/td>\nNPT, BSP, BSPT<\/td>\n<\/tr>\n
            1″<\/td>\n18 mm<\/td>\n35 mm<\/td>\nNPT, BSP, BSPT<\/td>\n<\/tr>\n
            1-1\/4″<\/td>\n20 mm<\/td>\n44 mm<\/td>\nNPT, BSPT<\/td>\n<\/tr>\n
            1-1\/2″<\/td>\n22 mm<\/td>\n50 mm<\/td>\nNPT, BSPT<\/td>\n<\/tr>\n
            2″<\/td>\n25 mm<\/td>\n64 mm<\/td>\nNPT, BSPT<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

            Tolerances and Testing<\/strong><\/p>\n

              \n
            • Dimensional Tolerance: \u00b10.2 mm<\/li>\n
            • Threading Accuracy: Class 2B (per ASME B1.20.1 for NPT)<\/li>\n
            • Surface Finish: \u2264 3.2 Ra (machined)<\/li>\n
            • Hydrostatic Testing: 1.5x rated pressure<\/li>\n<\/ul>\n

              Turnaround Time<\/strong><\/p>\n

              We offer a standard\u00a04 to 6-week lead time<\/strong>\u00a0from order confirmation, with express manufacturing and global air freight available for urgent demands. All parts are inspected before dispatch and supported by detailed test documentation.<\/p>\n

              Why Choose Us<\/strong><\/p>\n

              Our 30+ years of export experience, combined with advanced manufacturing technology and client-centric service, ensure reliability. We offer:<\/p>\n

                \n
              • Flexible production schedules<\/li>\n
              • Custom branding and packaging<\/li>\n
              • Quick response and engineering support<\/li>\n
              • Quality consistency with competitive pricing<\/li>\n
              • ISO-compliant systems and export certification<\/li>\n<\/ul>\n

                Frequently Asked Questions<\/strong><\/p>\n

                  \n
                1. Do you provide metric and imperial sizes?\n
                    \n
                  • Yes, we offer both metric and inch-based pipe thread plugs.<\/li>\n<\/ul>\n<\/li>\n
                  • Can you supply plugs with food-grade finish?\n
                      \n
                    • Yes, electro-polished plugs are available for sanitary and cleanroom use.<\/li>\n<\/ul>\n<\/li>\n
                    • Do you offer third-party inspection?\n
                        \n
                      • Yes, with agencies like SGS, BV, TUV on customer request.<\/li>\n<\/ul>\n<\/li>\n
                      • What are your MOQ terms?\n
                          \n
                        • Flexible MOQ for repeat buyers and export partners.<\/li>\n<\/ul>\n<\/li>\n
                        • Can you mark plugs with logos or codes?\n
                            \n
                          • Yes, laser or emboss marking is available on bulk orders.<\/li>\n<\/ul>\n<\/li>\n
                          • Do you support custom threads?\n
                              \n
                            • Absolutely. We manufacture NPT, BSPT, BSP, NPSM and special threads.<\/li>\n<\/ul>\n<\/li>\n
                            • Are the threads dryseal?\n
                                \n
                              • We can produce NPTF (dryseal) on request.<\/li>\n<\/ul>\n<\/li>\n
                              • What quality certificates do you provide?\n
                                  \n
                                • Material test certificate, pressure test report, RoHS and REACH compliance.<\/li>\n<\/ul>\n<\/li>\n
                                • Are plugs pressure tested?\n
                                    \n
                                  • Yes, we perform hydrostatic testing on all batches.<\/li>\n<\/ul>\n<\/li>\n
                                  • Do you have export experience?<\/li>\n<\/ol>\n
                                      \n
                                    • Yes, we export to North America, EU, Gulf, and SE Asia regularly.<\/li>\n<\/ul>\n

                                      Customer Testimonial<\/strong><\/p>\n

                                      \u00ab\u00a0We\u2019ve ordered Stainless Steel square head plugs for multiple valve assemblies. Their quality and consistency match our ASME requirements, and their team has always delivered well-packed, documentation-ready exports on time.\u00a0\u00bb \u2014\u00a0Tom L., Ohio, USA<\/strong><\/p>\n

                                      Glossary of Terms<\/strong><\/p>\n

                                        \n
                                      • Square Head Plug<\/strong>: A plug with a square protrusion for wrench tightening<\/li>\n
                                      • NPT\/BSPT<\/strong>: Tapered pipe thread standards used in sealing connections<\/li>\n
                                      • Investment Casting<\/strong>: Precision casting process using wax molds<\/li>\n
                                      • Hot Stamping<\/strong>: Forging process using heated dies to shape metal<\/li>\n
                                      • Thread Gauging<\/strong>: Measurement of thread conformity using calibrated gauges<\/li>\n<\/ul>\n

                                        Packaging and Shipping<\/strong><\/p>\n

                                          \n
                                        • Moisture-resistant polybags or caps on threads<\/li>\n
                                        • Corrugated export cartons with dividers<\/li>\n
                                        • Wooden crates for bulk or sea freight<\/li>\n
                                        • Custom labels with part numbers, barcodes, and logos available<\/li>\n<\/ul>\n

                                          Related parts we offer:<\/strong><\/h3>\n
                                            \n
                                          • \n

                                            SS square head pipe plugs<\/p>\n<\/li>\n

                                          • \n

                                            Stainless Steel threaded square plugs<\/p>\n<\/li>\n

                                          • \n

                                            304 stainless square head plug<\/p>\n<\/li>\n

                                          • \n

                                            316 stainless square head pipe plug<\/p>\n<\/li>\n

                                          • \n

                                            BSP threaded square head plugs<\/p>\n<\/li>\n

                                          • \n

                                            NPT Stainless Steel square plugs<\/p>\n<\/li>\n

                                          • \n

                                            Square head screw pipe plug SS<\/p>\n<\/li>\n

                                          • \n

                                            Industrial SS square plugs<\/p>\n<\/li>\n

                                          • \n

                                            Stainless Steel pipe end plug square head<\/p>\n<\/li>\n

                                          • \n

                                            High pressure stainless square head plug<\/p>\n<\/li>\n

                                          • \n

                                            Metric stainless square pipe plugs<\/p>\n<\/li>\n

                                          • \n

                                            SS threaded pipe plug<\/p>\n<\/li>\n

                                          • \n

                                            BSPT stainless pipe plug<\/p>\n<\/li>\n

                                          • \n

                                            Stainless threaded end cap<\/p>\n<\/li>\n

                                          • \n

                                            Stainless Steel pipe plug NPT<\/p>\n<\/li>\n

                                          • \n

                                            316 stainless threaded plug supplier<\/p>\n<\/li>\n

                                          • \n

                                            304 SS plug fitting BSP<\/p>\n<\/li>\n

                                          • \n

                                            NPT male threaded stainless plug<\/p>\n<\/li>\n

                                          • \n

                                            Sanitary threaded pipe plug stainless<\/p>\n<\/li>\n

                                          • \n

                                            Industrial threaded pipe plug<\/p>\n<\/li>\n

                                          • \n

                                            Stainless barstock plug<\/p>\n<\/li>\n

                                          • \n

                                            Custom stainless plug with thread<\/p>\n<\/li>\n<\/ul>\n

                                            Looking for high-quality Stainless Steel plugs? \ud83d\udce7\u00a0Email or WhatsApp<\/strong>\u00a0us now!
                                            \nRequest a catalogue or RFQ now!<\/strong><\/p>\n","protected":false},"featured_media":25513,"template":"","meta":[],"product_brand":[],"product_cat":[631],"product_tag":[],"class_list":{"0":"post-25512","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-pieces-acier-inoxydable","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"yoast_head":"\nBouchons \u00e0 T\u00eate Carr\u00e9e en Acier Inoxydable | Bouchons de Tuyauterie Filet\u00e9s en Acier Inoxydable<\/title>\n<meta name=\"description\" content=\"Conex is a leading manufacturer and exporter of Stainless Steel Square Head Plugs and Stainless Steel Threaded Pipe Plugs in NPT, BSP, BSPT, NPSM threads. Precision-cast, machined, and forged plugs with global shipping. we also offer Stainless Steel Square Head PlugsSS square head pipe plugs Stainless Steel threaded square plugs 304 stainless square head plug 316 stainless square head pipe plug NPT Stainless Steel square plugs and Square head screw pipe plug SS from our India factory.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/conexmetals.com\/fr\/product\/bouchons-a-tete-carree-en-acier-inoxydable-bouchons-de-tuyauterie-filetes-en-acier-inoxydable\/\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/conexmetals.com\\\/fr\\\/product\\\/bouchons-a-tete-carree-en-acier-inoxydable-bouchons-de-tuyauterie-filetes-en-acier-inoxydable\\\/\",\"url\":\"https:\\\/\\\/conexmetals.com\\\/fr\\\/product\\\/bouchons-a-tete-carree-en-acier-inoxydable-bouchons-de-tuyauterie-filetes-en-acier-inoxydable\\\/\",\"name\":\"Bouchons \u00e0 T\u00eate Carr\u00e9e en Acier Inoxydable | Bouchons de Tuyauterie Filet\u00e9s en Acier Inoxydable\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/conexmetals.com\\\/fr\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/conexmetals.com\\\/fr\\\/product\\\/bouchons-a-tete-carree-en-acier-inoxydable-bouchons-de-tuyauterie-filetes-en-acier-inoxydable\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/conexmetals.com\\\/fr\\\/product\\\/bouchons-a-tete-carree-en-acier-inoxydable-bouchons-de-tuyauterie-filetes-en-acier-inoxydable\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/conexmetals.com\\\/wp-content\\\/uploads\\\/2025\\\/04\\\/Stainless-steel-plugs-male-threaded-SS-plugs.webp\",\"datePublished\":\"2025-04-08T06:25:26+00:00\",\"dateModified\":\"2026-06-28T16:20:41+00:00\",\"description\":\"Conex is a leading manufacturer and exporter of Stainless Steel Square Head Plugs and Stainless Steel Threaded Pipe Plugs in NPT, BSP, BSPT, NPSM threads. 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